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i . Report Number 199 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date 11/28/2001 <br /> Project Name 2575 COUNTRYCLUS, <br /> Project Number <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Dup Sample Sample Analysis Date Percent Percent Percent Recov, Diff <br /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Spike Recovery Data <br /> Benzene 23408-14 <0 50 19,8 189 201 192 ug/L EPA 8260E 111171200101 101 0 247 70-130 25 <br /> Toluene 23408-14 <0 50 198 189 206 193 ug/L EPA 82606 111171200104 102 202 70-130 25 <br /> Tert-Butanol 23408-14 <5 0 99 0 94 7 109 105 ug/l. EPA 8260B 111171200110 111 0 916 70-130 25 <br /> Methyl-t-Butyl Ether 23408-14 <0 50 198 189 169 180 ug/L EPA 8260E 11/17120085 5 95 4 109 70-130 25 <br /> I <br /> � l <br /> J I Kiff ' <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 Approved By <br />